CN104528703A - Preparation method of nitrogen/phosphorus-codoped graphene - Google Patents
Preparation method of nitrogen/phosphorus-codoped graphene Download PDFInfo
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Abstract
The invention discloses a preparation method of nitrogen/phosphorus-codoped graphene, which comprises the following steps: S100: proportionally and evenly mixing a phosphatic compound, a nitrogenous organic matter and a tricarbo compound, and drying and pulverizing or directly pulverizing, thereby obtaining precursor granules, wherein the mole ratio of N atoms in the nitrogenous organic matter to C atoms in the tricarbo compound is 10:1-100:1, and the mole ratio of N atoms in the nitrogenous organic matter to P atoms in the phosphatic compound is 10:1-1000:1; and S200. putting the precursor granules in a heating furnace, introducing a protective gas, keeping the temperature at 800-1300 DEG C for 0.5-5 hours, and cooling to obtain the nitrogen/phosphorus-codoped graphene. The method has the advantages of simple preparation process, accessible raw materials, low cost and high yield, and can easily implement large-scale production. The obtained graphene has the advantages of uniform distribution of N atoms and P atoms, adjustable doping content and favorable product quality, and has higher practical application value.
Description
Technical field
The present invention relates to technical field of material, particularly relate to a kind of preparation method of nitrogen-phosphor codoping Graphene.
Background technology
Graphene is a kind of two-dimentional new carbon be made up of C atom six-ring plane development.Good carrier mobility and extra specific surface area make Graphene become material star.But, again fit between the easy genetic horizon of effect of pure Graphene in use due to Van der Waals force and coulomb electrostatic force and lose the ability storing electric charge.Research shows, can change free charge in the equally distributed situation in graphene sheet layer both sides, make the unbound electron in foreign atom periphery certain limit occur that localization distributes by doping, thus causes graphene sheet layer to occur bending gauffer.Gauffer graphene sheet layer can provide stronger anchorage force, thus avoids the stacking compound of graphene film interlayer, can also improve overall porosity, mesoporous mark thus affect the application of Graphene in fields such as energy storage, catalysis, environmental protection simultaneously.
At present, the Graphene containing foreign atom is prepared mainly through chemical Vapor deposition process and ion implantation.But the requirement of above-mentioned two kinds of methods to equipment and technology is harsh, preparation cost is high, is unfavorable for large-scale production.
Summary of the invention
Based on the problems referred to above, the invention provides a kind of preparation method preparing nitrogen-phosphor codoping Graphene simple, with low cost.
For achieving the above object, the present invention adopts following technical scheme:
A preparation method for nitrogen-phosphor codoping Graphene, comprises the following steps:
S100: P contained compound, itrogenous organic substance and six carbon compounds are mixed according to certain ratio, crushed after being dried or directly pulverize, obtains granular precursor;
Wherein, in described itrogenous organic substance, in atom N and described six carbon compounds, the mol ratio of C atom is 10:1 ~ 100:1, and in described itrogenous organic substance, in atom N and described P contained compound, the mol ratio of P atom is 10:1 ~ 1000:1;
S200: described granular precursor is placed in process furnace, passes into shielding gas, is incubated 0.5h ~ 5h, can obtains nitrogen-phosphor codoping Graphene after cooling at 800 DEG C ~ 1300 DEG C.
Wherein in an embodiment, described itrogenous organic substance is one or more in urea, trimeric cyanamide and Dyhard RU 100;
Described six carbon compounds are one or more in pentahydroxy-methyl furfural, glucose, seminose and Lalgine;
Described P contained compound is one or both in phosphoric acid and triphenylphosphine.
Wherein in an embodiment, in S100, the mode that described P contained compound, itrogenous organic substance and six carbon compounds pass through to flood, dissolving or solid grind altogether altogether mixes.
Wherein in an embodiment, when described P contained compound is phosphoric acid, described P contained compound, itrogenous organic substance and six carbon compounds mix in the following way:
By the phosphate aqueous solution incipient impregnation that described itrogenous organic substance and mass concentration are 1wt% ~ 20wt%, then add six carbon compounds, and stir.
Wherein in an embodiment, in S100, described drying conditions is: dry 12h ~ 24h at 60 DEG C ~ 100 DEG C.
Wherein in an embodiment, in S100, the granularity of described granular precursor is less than or equal to 20 orders.
Wherein in an embodiment, in S200, described in the linear rate of flow of shielding gas that passes into be 1cm/min ~ 10cm/min.
Wherein in an embodiment, in S200, the temperature controlled processes of described process furnace is: with the speed of 1 DEG C/min ~ 5 DEG C/min by room temperature to 600 DEG C ~ 700 DEG C, continue to be warming up to 800 DEG C ~ 1300 DEG C with the 2 DEG C/min ~ 10 DEG C/speed of min after insulation 1h ~ 5h, after insulation 0.5h ~ 3h, be cooled to room temperature.
Wherein in an embodiment, in S200, the temperature controlled processes of described process furnace is: with the speed of 1 DEG C/min ~ 5 DEG C/min by room temperature to 800 DEG C ~ 1300 DEG C, after insulation 1h ~ 5h, be cooled to room temperature.
Wherein in an embodiment, described shielding gas is one or more in nitrogen, argon gas and helium.
The present invention has following beneficial effect:
The present invention obtains nitrogen-phosphor codoping Graphene by disposable solid-phase thermal cracking, compared with traditional method, the requirement of method of the present invention to equipment and technology is lower, preparation process is simple, and raw material easily obtains, and cost is low, output is high, be easy to large-scale production, and preparation process is without the need to the support of substrate, avoids the problem that Graphene and substrate are difficult to be separated; Meanwhile, in the Graphene utilizing method of the present invention to obtain, atom N and P atom are evenly distributed, and doping content is adjustable, good product quality, have higher actual application value.
Accompanying drawing explanation
Fig. 1 is the Raman spectrogram of the nitrogen-phosphor codoping Graphene obtained in the embodiment of the present invention 1;
Fig. 2 is the scanning electron microscope (SEM) photograph of the nitrogen-phosphor codoping Graphene obtained in the embodiment of the present invention 1;
Fig. 3 is the transmission electron microscope picture of the nitrogen-phosphor codoping Graphene obtained in the embodiment of the present invention 1;
Fig. 4 is the atomic force microscope characterization result of the nitrogen-phosphor codoping Graphene obtained in the embodiment of the present invention 1, and wherein, yellow background is atomic power electromicroscopic photograph, and black curve is the elevation carrection curve of Graphene;
Fig. 5 is the nitrogen physisorption result of the nitrogen-phosphor codoping Graphene obtained in the embodiment of the present invention 1;
Fig. 6 is the x-ray photoelectron spectroscopy figure of the nitrogen-phosphor codoping Graphene obtained in the embodiment of the present invention 1.
Embodiment
Below the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
The invention provides a kind of preparation method of nitrogen-phosphor codoping Graphene, the Graphene uniform doping prepared by the method, output is high, and the physical and chemical performance of the product obtained is stablized, and the situation causing Graphene loses in performance due to the stacking compound of lamella in use not easily occurs.
Preparation method of the present invention comprises the following steps:
S100, the preparation of granular precursor: P contained compound, itrogenous organic substance and six carbon compounds are mixed according to certain ratio, crushed after being dried or directly pulverize, obtains granular precursor; Wherein, in itrogenous organic substance, in atom N and six carbon compounds, the mol ratio of C atom is 10:1 ~ 100:1, and in itrogenous organic substance, in atom N and P contained compound, the mol ratio of P atom is 10:1 ~ 1000:1.
Preferably, as a kind of embodiment, itrogenous organic substance is one or more (comprising two kinds) in urea, trimeric cyanamide, Dyhard RU 100; Six carbon compounds are the compound containing 6 C atoms, are preferably one or more (the comprising two kinds) in pentahydroxy-methyl furfural, glucose, seminose Lalgine; P contained compound is phosphoric acid, triphenylphosphine or the mixture of the two.Because phosphoric acid has pore-creating effect, can increase the specific surface area of the Graphene finally obtained, therefore, P contained compound is preferably the mixture of phosphoric acid or phosphoric acid and triphenylphosphine.
In the present invention, the mode that P contained compound, itrogenous organic substance and six carbon compounds grind altogether by dipping, common dissolving or solid mixes.Such as, the aqueous solution that first itrogenous organic substance can be placed in P contained compound floods, and then adds six carbon compounds, and stirs; Also P contained compound, itrogenous organic substance and six carbon compounds can be dissolved in a certain amount of water, and stir; Also P contained compound, itrogenous organic substance and six carbon compounds directly can be mixed, then grinding evenly.
Further, when P contained compound is phosphoric acid, P contained compound, itrogenous organic substance and six carbon compounds mix by such as under type: the phosphate aqueous solution incipient impregnation by itrogenous organic substance and mass concentration being 1wt% ~ 20wt%, then add six carbon compounds, and stir.Incipient impregnation speed, mixes, and is suitable for industrial production; And in the concentration range of this phosphoric acid, be conducive to obtaining the better excellent Graphene of performance.
After P contained compound, itrogenous organic substance and six carbon compounds are mixed according to certain ratio, if there is free water content in mixture, then need to carry out drying operation, to remove the free water content in mixture, and then carry out the step pulverized, if there is not free water content in mixture, then can directly mixture be pulverized.Preferably, drying conditions is: dry 12h ~ 24h at 60 DEG C ~ 100 DEG C.Wherein, grinding mode is preferably mechanical disintegration, as mechanical mill.It should be noted that, the blending process of itrogenous organic substance, P contained compound and six carbon compounds and crushing process can carry out simultaneously.
In the present invention, the granularity for the granular precursor obtained after pulverizing is not particularly limited.In order to prepare the nitrogen-phosphor codoping Graphene of excellent property, strengthen its physical and chemical stability, preferably, the granularity of granular precursor is less than or equal to 20 orders.
S200, solid-phase thermal scission reaction: the granular precursor obtained in step S100 is placed in process furnace, passes into shielding gas, is incubated 0.5h ~ 5h, can obtains nitrogen-phosphor codoping Graphene after cooling at 800 DEG C ~ 1300 DEG C.
Preferably, the nitrogen-phosphor codoping Graphene that the present invention obtains has 2 ~ 3 layer graphene lamellas.
This step obtains required nitrogen-phosphor codoping Graphene by solid-phase thermal cracking, and wherein, process furnace is preferably the tube furnace of built-in silica tube or alundum tube, to facilitate passing into of shielding gas, shielding gas be preferably in nitrogen, argon gas and helium one or more.The flow velocity of shielding gas is unsuitable excessive, and its linear rate of flow is preferably 1cm/min ~ 10cm/min.Under this speed, yield and the purity of product can be ensured, the oxidation of product can be prevented again, and then improve the physical and chemical performance of product.
In step S200, type of heating can adopt a step heating mode, also can adopt temperature-gradient method mode.In order to improve product quality, rate of heating is unsuitable too fast, preferably, when employing one step heating mode, the temperature controlled processes of process furnace is: with the speed of 1 DEG C/min ~ 5 DEG C/min by room temperature to 800 DEG C ~ 1300 DEG C, after insulation 1h ~ 5h, be cooled to room temperature; When adopting temperature-gradient method mode, the temperature controlled processes of process furnace is: with the speed of 1 DEG C/min ~ 5 DEG C/min by room temperature to 600 DEG C ~ 700 DEG C, continue to be warming up to 800 DEG C ~ 1300 DEG C with the 2 DEG C/min ~ 10 DEG C/speed of min after insulation 1h ~ 5h, after insulation 0.5h ~ 3h, be cooled to room temperature.
In the present invention, the Main Function of itrogenous organic substance is to provide template, makes six carbon compounds planar polymerized and forms lamellar compound, after temperature raises, the volatilization of the itrogenous organic substance overwhelming majority or distillation effusion, leave the carbon skeleton of stratiform, thus provide the foundation for the generation of Graphene; The effect of P contained compound is to provide P source, when there is phosphoric acid in P contained compound, because the intermediate product produced in phosphoric acid and pyrolysis process thereof has the effect of pore-creating, thus can improve Graphene specific surface area.
It should be noted that, in the nitrogen-phosphor codoping Graphene finally obtained, the doping content of atom N and P atom regulates and controls by the ratio of raw material each time initial.
The preparation method of nitrogen-phosphor codoping Graphene of the present invention, adopt and prepare approach with traditional preparation method is diverse, the raw material that method of the present invention uses is conventional industrial chemicals, and cost is lower; Meanwhile, the requirement of method of the present invention to equipment and technology is lower, disposablely can obtain nitrogen-phosphor codoping Graphene by solid-phase thermal cracking, simple to operate, is easy to large-scale production; In the Graphene that method of the present invention obtains, atom N and P atom are evenly distributed, and doping content is adjustable, thus can meet the application of Graphene different field; And the Graphene that the present invention obtains has hierarchical porous structure, there is preferably self-supporting performance, there is the advantages such as ultralight and superhigh specific surface area simultaneously, in use can resist and stack compound, there is stable physical and chemical performance and excellent work-ing life; In addition, the preparation process of the method, without the need to the support of substrate, avoids the problem that Graphene and substrate are difficult to be separated.
In order to understand the present invention better, below by specific embodiment, the preparation method to nitrogen-phosphor codoping Graphene of the present invention is further described.Reaction raw materials in following examples is marketable material.
Embodiment 1
(1) in beaker, 80g Dyhard RU 100 is added, then be after the phosphoric acid incipient impregnation of 10wt% with mass concentration, add 2g pentahydroxy-methyl furfural again, stir at 80 DEG C, put into baking oven dry 12h at 100 DEG C, after taking out, grinding, obtains granularity and is less than or equal to 20 object granular precursors.Wherein, the mol ratio of the C atom in the atom N in Dyhard RU 100 and pentahydroxy-methyl furfural is 40:1, and the mol ratio of the atom N in Dyhard RU 100 and the P atom in phosphoric acid is 60:1.
(2) be placed in the quartz boat of tube furnace by the granular precursor that step (1) obtains, pass into high pure nitrogen as whole process protection gas after sealing, wherein, the linear rate of flow of nitrogen is 2cm/min; Be warming up to 600 DEG C with the speed of 2 DEG C/min after ventilation 1h, insulation 2h, is then warming up to 1000 DEG C with the speed of 5 DEG C/min, and insulation 1h, naturally cool to room temperature, the product obtained is nitrogen-phosphor codoping Graphene.
See Fig. 1, be the Raman spectrogram of the nitrogen-phosphor codoping Graphene that the present embodiment obtains, as we know from the figure, at 1340cm
-1, 1580cm
-1and 2680cm
-1there are three characteristic peaks at place, is respectively D, G and 2D peak, illustrates that the product obtained is Graphene; Fig. 2 is the scanning electron microscope (SEM) photograph of the nitrogen-phosphor codoping Graphene that the present embodiment obtains, from the visible significantly gauffer graphene film Rotating fields of figure; Fig. 3 is the transmission electron microscope picture of the nitrogen-phosphor codoping Graphene that the present embodiment obtains, and this Graphene has porosity characteristic as seen from the figure; Fig. 4 is the atomic force microscope characterization result of the nitrogen-phosphor codoping Graphene that the present embodiment obtains, and elevation carrection is shown as 2 ~ 3 layer graphene lamellas; Fig. 5 is the nitrogen physisorption result of the nitrogen-phosphor codoping Graphene that the present embodiment obtains, and its specific surface area is up to 1960m
2/ g, micropore and mesoporous abundant, and mesoporous pore size has integrated distribution at about 4nm; Fig. 6 is the x-ray photoelectron spectroscopy figure of the nitrogen-phosphor codoping Graphene that the present embodiment obtains, and result shows, nitrogen in this Graphene, phosphoric composition is respectively 5.07% (atomic ratio, lower with), 0.99%, and oxygen level lower be 5.89%.
Embodiment 2
(1) in beaker, 80g Dyhard RU 100 is added, then be after the phosphoric acid incipient impregnation of 20wt% with mass concentration, add 2g pentahydroxy-methyl furfural again, stir at 80 DEG C, put into baking oven dry 12h at 100 DEG C, after taking out, grinding, obtains granularity and is less than or equal to 20 object granular precursors.Wherein, the mol ratio of the C atom in the atom N in Dyhard RU 100 and pentahydroxy-methyl furfural is 40:1, and the mol ratio of the atom N in Dyhard RU 100 and the P atom in phosphoric acid is 30:1.
(2) with embodiment 1.
Compared with embodiment 1, the concentration of the phosphoric acid in the raw material that the present embodiment uses there occurs change, and all the other preparation conditions all do not change, and along with the rising of phosphoric acid concentration, total pore volume of the nitrogen-phosphor codoping Graphene finally obtained and specific surface area all become large.
Embodiment 3
(1) in beaker, 80g Dyhard RU 100 is added, then be after the phosphoric acid incipient impregnation of 1wt% with mass concentration, add 2g pentahydroxy-methyl furfural again, stir at 80 DEG C, put into baking oven dry 12h at 100 DEG C, after taking out, grinding, obtains granularity and is less than or equal to 20 object granular precursors.Wherein, the mol ratio of the C atom in the atom N in Dyhard RU 100 and pentahydroxy-methyl furfural is 40:1, and the mol ratio of the atom N in Dyhard RU 100 and the P atom in phosphoric acid is 600:1.
(2) with embodiment 1.
Compared with embodiment 1, the concentration of the phosphoric acid in the raw material that the present embodiment uses there occurs change, all the other preparation conditions all do not change, and along with the reduction of phosphoric acid concentration, the micropore quantity of the nitrogen-phosphor codoping Graphene finally obtained, total pore volume and specific surface area all reduce.
Embodiment 4
(1) in beaker, add 120g Dyhard RU 100,1.5g pentahydroxy-methyl furfural, the analytically pure strong phosphoric acid of 3.78ml and 600ml deionized water, stir at 80 DEG C, then the dry 16h of baking oven of 80 DEG C is placed in, remove free water content, after taking out, grinding, obtains granularity and is less than or equal to 20 object granular precursors.Wherein, the mol ratio of the C atom in the atom N in Dyhard RU 100 and pentahydroxy-methyl furfural is 80:1, and the mol ratio of the atom N in Dyhard RU 100 and the P atom in strong phosphoric acid is 100:1.
(2) be placed in the quartz boat of tube furnace by the granular precursor that step (1) obtains, pass into high-purity argon gas as whole process protection gas after sealing, wherein, the linear rate of flow of argon gas is 5cm/min; Be warming up to 1000 DEG C with the speed of 2 DEG C/min after ventilation 1h, insulation 2h, naturally cool to room temperature, the product obtained is nitrogen-phosphor codoping Graphene.
Embodiment 5
(1) in beaker, add 20g Dyhard RU 100,2g pentahydroxy-methyl furfural, the analytically pure strong phosphoric acid of 6.3ml and 500ml deionized water, stir at 60 DEG C, then the dry 24h of baking oven of 60 DEG C is placed in, remove free water content, after taking out, grinding, obtains granularity and is less than or equal to 20 object granular precursors.Wherein, the mol ratio of the C atom in the atom N in Dyhard RU 100 and pentahydroxy-methyl furfural is 10:1, and the mol ratio of the atom N in Dyhard RU 100 and the P atom in strong phosphoric acid is 10:1.
(2) be placed in the quartz boat of tube furnace by the granular precursor that step (1) obtains, pass into high-purity argon gas as whole process protection gas after sealing, wherein, the linear rate of flow of argon gas is 2cm/min; Be warming up to 800 DEG C with the speed of 1 DEG C/min after ventilation 0.5h, insulation 5h, naturally cool to room temperature, the product obtained is nitrogen-phosphor codoping Graphene.
Embodiment 6
(1) in beaker, add 160g trimeric cyanamide and 2.3g seminose, in beaker, then add the phosphoric acid that 0.55ml mass concentration is 20wt%, and stir, be then placed in ball mill ball milling 60min, obtain granular precursor.Wherein, the mol ratio of the atom N in trimeric cyanamide and the C atom in seminose is 100:1, and the mol ratio of the atom N in trimeric cyanamide and the P atom in phosphoric acid is 1000:1.
(2) be placed in the quartz boat of tube furnace by the granular precursor that step (1) obtains, pass into high pure nitrogen as whole process protection gas after sealing, wherein, the linear rate of flow of nitrogen is 5cm/min; Be warming up to 700 DEG C with the speed of 1 DEG C/min after ventilation for some time, insulation 5h, is then warming up to 1300 DEG C with the speed of 10 DEG C/min, and insulation 0.5h, naturally cool to room temperature, the product obtained is nitrogen-phosphor codoping Graphene.
Embodiment 7
(1) in beaker, add 160g trimeric cyanamide and 2.3g glucose, then in beaker, add 2g triphenylphosphine, and stir, be then placed in ball mill ball milling 30min, obtain granular precursor.Wherein, the mol ratio of the atom N in trimeric cyanamide and the C atom in glucose is 100:1, and the mol ratio of the atom N in trimeric cyanamide and the P atom in triphenylphosphine is 1000:1.
(2) be placed in the quartz boat of tube furnace by the granular precursor that step (1) obtains, pass into high-purity helium as whole process protection gas after sealing, wherein, the linear rate of flow of helium is 4cm/min; Be warming up to 650 DEG C with the speed of 5 DEG C/min after ventilation for some time, insulation 1h, is then warming up to 800 DEG C with the speed of 10 DEG C/min, and insulation 3h, naturally cool to room temperature, the product obtained is nitrogen-phosphor codoping Graphene.
Embodiment 8
(1) in beaker, add 160g Dyhard RU 100,2.3g glucose, the analytically pure strong phosphoric acid of 0.5ml, 2g triphenylphosphine, and stir, be then placed in ball mill ball milling 60min, obtain granular precursor.Wherein, the mol ratio of the C atom in the atom N in Dyhard RU 100 and pentahydroxy-methyl furfural is 100:1, and the mol ratio of the P atom summation in the atom N in Dyhard RU 100 and strong phosphoric acid and triphenylphosphine is 500:1.
(2) be placed in the quartz boat of tube furnace by the granular precursor that step (1) obtains, pass into high-purity argon gas as whole process protection gas after sealing, wherein, the linear rate of flow of argon gas is 6cm/min; Be warming up to 1300 DEG C with the speed of 4 DEG C/min after ventilation 1h, insulation 1h, naturally cool to room temperature, the product obtained is nitrogen-phosphor codoping Graphene.
Embodiment 9
(1) in beaker, add 120g urea, 1.2g glucose, the analytically pure strong phosphoric acid of 0.26ml and 700ml deionized water, stir at 65 DEG C, then the dry 16h of baking oven of 100 DEG C is placed in, remove free water content, after taking out, grinding, obtains granularity and is less than or equal to 20 object granular precursors.Wherein, the mol ratio of the atom N in urea and the C atom in glucose is 100:1, and the mol ratio of the atom N in urea and the P atom in strong phosphoric acid is 1000:1.
(2) be placed in the quartz boat of tube furnace by the granular precursor that step (1) obtains, pass into high-purity argon gas as whole process protection gas after sealing, wherein, the linear rate of flow of argon gas is 7cm/min; Be warming up to 700 DEG C with the speed of 5 DEG C/min after ventilation 1h, insulation 3h, is then warming up to 1200 DEG C with the speed of 4 DEG C/min, and insulation 1.5h, naturally cool to room temperature, the product obtained is nitrogen-phosphor codoping Graphene.
Embodiment 10
(1) in beaker, add 60g urea, 6g Lalgine, the analytically pure phosphoric acid of 1.3ml and 300ml deionized water, stir at 65 DEG C, be then placed in the dry 16h of baking oven of 80 DEG C, remove free water content, after taking out, grinding, obtains granularity and is less than or equal to 20 object granular precursors.Wherein, the mol ratio of the atom N in urea and the C atom in Lalgine is 10:1, and the mol ratio of the atom N in urea and the P atom in phosphoric acid is 100:1.
(2) be placed in the quartz boat of tube furnace by the granular precursor that step (1) obtains, pass into high-purity argon gas as whole process protection gas after sealing, wherein, the linear rate of flow of argon gas is 4cm/min; Be warming up to 680 DEG C with the speed of 5 DEG C/min after ventilation 0.5h, insulation 2.5h, is then warming up to 1100 DEG C with the speed of 5 DEG C/min, and insulation 2h, naturally cool to room temperature, the product obtained is nitrogen-phosphor codoping Graphene.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a preparation method for nitrogen-phosphor codoping Graphene, is characterized in that, comprises the following steps:
S100: P contained compound, itrogenous organic substance and six carbon compounds are mixed according to certain ratio, crushed after being dried or directly pulverize, obtains granular precursor;
Wherein, in described itrogenous organic substance, in atom N and described six carbon compounds, the mol ratio of C atom is 10:1 ~ 100:1, and in described itrogenous organic substance, in atom N and described P contained compound, the mol ratio of P atom is 10:1 ~ 1000:1;
S200: described granular precursor is placed in process furnace, passes into shielding gas, is incubated 0.5h ~ 5h, can obtains nitrogen-phosphor codoping Graphene after cooling at 800 DEG C ~ 1300 DEG C.
2. the preparation method of nitrogen-phosphor codoping Graphene according to claim 1, is characterized in that, described itrogenous organic substance is one or more in urea, trimeric cyanamide and Dyhard RU 100;
Described six carbon compounds are one or more in pentahydroxy-methyl furfural, glucose, seminose and Lalgine;
Described P contained compound is one or both in phosphoric acid and triphenylphosphine.
3. the preparation method of nitrogen-phosphor codoping Graphene according to claim 1, is characterized in that, in S100, the mode that described P contained compound, itrogenous organic substance and six carbon compounds pass through to flood, dissolving or solid grind altogether altogether mixes.
4. the preparation method of nitrogen-phosphor codoping Graphene according to claim 1, is characterized in that, when described P contained compound is phosphoric acid, described P contained compound, itrogenous organic substance and six carbon compounds mix in the following way:
By the phosphate aqueous solution incipient impregnation that described itrogenous organic substance and mass concentration are 1wt% ~ 20wt%, then add six carbon compounds, and stir.
5. the preparation method of nitrogen-phosphor codoping Graphene according to claim 1, is characterized in that, in S100, described drying conditions is: dry 12h ~ 24h at 60 DEG C ~ 100 DEG C.
6. the preparation method of nitrogen-phosphor codoping Graphene according to claim 1, is characterized in that, in S100, the granularity of described granular precursor is less than or equal to 20 orders.
7. the preparation method of nitrogen-phosphor codoping Graphene according to claim 1, is characterized in that, in S200, described in the linear rate of flow of shielding gas that passes into be 1cm/min ~ 10cm/min.
8. the preparation method of nitrogen-phosphor codoping Graphene according to claim 1, it is characterized in that, in S200, the temperature controlled processes of described process furnace is: with the speed of 1 DEG C/min ~ 5 DEG C/min by room temperature to 600 DEG C ~ 700 DEG C, continue to be warming up to 800 DEG C ~ 1300 DEG C with the 2 DEG C/min ~ 10 DEG C/speed of min after insulation 1h ~ 5h, after insulation 0.5h ~ 3h, be cooled to room temperature.
9. the preparation method of nitrogen-phosphor codoping Graphene according to claim 1, it is characterized in that, in S200, the temperature controlled processes of described process furnace is: with the speed of 1 DEG C/min ~ 5 DEG C/min by room temperature to 800 DEG C ~ 1300 DEG C, after insulation 1h ~ 5h, be cooled to room temperature.
10. the preparation method of nitrogen-phosphor codoping Graphene according to claim 1, is characterized in that, described shielding gas is one or more in nitrogen, argon gas and helium.
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| CN104817077A (en) * | 2015-05-07 | 2015-08-05 | 常州大学 | Preparation method of nitrogen- and phosphorus-doped graphene sheet |
| CN104817063A (en) * | 2015-05-07 | 2015-08-05 | 常州大学 | Preparation method of two-dimension nitrogen- and phosphorus-doped graphene |
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| CN105214699A (en) * | 2015-09-30 | 2016-01-06 | 南开大学 | A kind of preparation method of porous doping carbon high-dispersion load phosphatization cobalt material and the application in electrocatalytic hydrogen evolution |
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| CN104817063A (en) * | 2015-05-07 | 2015-08-05 | 常州大学 | Preparation method of two-dimension nitrogen- and phosphorus-doped graphene |
| CN104843692A (en) * | 2015-05-07 | 2015-08-19 | 常州大学 | Preparation method of two-dimensional sulfur nitrogen doped graphene |
| CN104817077A (en) * | 2015-05-07 | 2015-08-05 | 常州大学 | Preparation method of nitrogen- and phosphorus-doped graphene sheet |
| CN104817063B (en) * | 2015-05-07 | 2016-08-17 | 常州大学 | A kind of preparation method of two dimension nitrogen phosphorus doping Graphene |
| CN104817077B (en) * | 2015-05-07 | 2016-08-24 | 常州大学 | A kind of preparation method of nitrogen phosphorus doping graphene film |
| CN105214699B (en) * | 2015-09-30 | 2017-12-19 | 南开大学 | A kind of preparation method of porous doped carbon high-dispersion load phosphatization cobalt material and the application in electrocatalytic hydrogen evolution |
| CN105214699A (en) * | 2015-09-30 | 2016-01-06 | 南开大学 | A kind of preparation method of porous doping carbon high-dispersion load phosphatization cobalt material and the application in electrocatalytic hydrogen evolution |
| CN105562050A (en) * | 2015-12-15 | 2016-05-11 | 华南理工大学 | Porous graphene-like structure doped carbon material as well as preparation method and application of porous graphene-like structure doped carbon material |
| CN105562050B (en) * | 2015-12-15 | 2018-12-11 | 华南理工大学 | A kind of porous class graphene-structured doping carbon material and the preparation method and application thereof |
| US10079392B2 (en) | 2016-03-08 | 2018-09-18 | Industrial Technology Research Institute | Metal-doped graphene and growth method of the same |
| CN107221459A (en) * | 2017-05-27 | 2017-09-29 | 中国石油大学(北京) | A kind of nitrogen-phosphor codoping graphene and preparation method and application |
| CN108232116A (en) * | 2017-12-15 | 2018-06-29 | 江苏大学 | A kind of preparation method of nitrogen, phosphor codoping Graphene gel electrochemistry storage sodium electrode |
| TWI676193B (en) * | 2018-07-31 | 2019-11-01 | 國家中山科學研究院 | A supercapacitor of n-p doping holey graphene material in ionic liquid electrolyte and method for producing thereof |
| CN110591698A (en) * | 2019-09-18 | 2019-12-20 | 宁波大学 | Preparation method and application of cyclotriphosphazene doped graphene quantum dots |
| CN110591698B (en) * | 2019-09-18 | 2022-12-27 | 宁波大学 | Preparation method and application of cyclotriphosphazene doped graphene quantum dots |
| CN111377439A (en) * | 2020-05-20 | 2020-07-07 | 延安大学 | Preparation method of graphene doped with two-dimensional nitrogen and phosphorus |
| CN114864295A (en) * | 2022-01-28 | 2022-08-05 | 上海工程技术大学 | Nitrogen-phosphorus co-doped graphene composite material, capacitor cathode material and preparation method of capacitor cathode material |
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